D-branes in type I string theory

  title={D-branes in type I string theory},
  author={Marialuisa Frau and L. Gallot and A. Lerda and P. Strigazzi}
We review the boundary state description of D-branes in type I string theory and show that the only stable non BPS configurations are the D-particle and the Dinstanton. We also compute the gauge and gravitational interactions of the non-BPS D-particles and compare them with the interactions of the dual non-BPS particles of the heterotic string, finding complete agreement. 1 D-branes of type II theories The Dirichlet branes [1] can be described, in the weak coupling regime of string theory, by a… CONTINUE READING


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